CY7C1381D, CY7C1381F

CY7C1383D, CY7C1383F

Truth Table for Read/Write [4, 9]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Function (CY7C1381D/CY7C1381F)

 

GW

 

 

 

 

BWE

 

 

 

 

BWD

 

 

BWC

 

 

 

BWB

 

 

BWA

Read

 

H

 

 

 

 

H

 

 

 

 

X

 

 

X

 

 

 

X

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read

 

H

 

 

 

 

L

 

 

 

 

H

 

 

H

 

 

 

H

 

 

 

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Write Byte A (DQA, DQPA)

 

H

 

 

 

 

L

 

 

 

 

H

 

 

H

 

 

 

H

 

 

 

L

Write Byte B(DQB, DQPB)

 

H

 

 

 

 

L

 

 

 

 

H

 

 

H

 

 

 

L

 

 

 

H

Write Bytes A, B (DQA, DQB, DQPA, DQPB)

 

H

 

 

 

 

L

 

 

 

 

H

 

 

H

 

 

 

L

 

 

 

L

Write Byte C (DQC, DQPC)

 

H

 

 

 

 

L

 

 

 

 

H

 

 

L

 

 

 

H

 

 

 

H

Write Bytes C, A (DQC, DQA, DQPC, DQPA)

 

H

 

 

 

 

L

 

 

 

 

H

 

 

L

 

 

 

H

 

 

 

L

Write Bytes C, B (DQC, DQB, DQPC, DQPB)

 

H

 

 

 

 

L

 

 

 

 

H

 

 

L

 

 

 

L

 

 

 

H

Write Bytes C, B, A (DQC, DQB, DQA, DQPC,

 

H

 

 

 

 

L

 

 

 

 

H

 

 

L

 

 

 

L

 

 

 

L

DQPB, DQPA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Write Byte D (DQD, DQPD)

 

H

 

 

 

 

L

 

 

 

 

L

 

 

H

 

 

 

H

 

 

 

H

Write Bytes D, A (DQD, DQA, DQPD, DQPA)

 

H

 

 

 

 

L

 

 

 

 

L

 

 

H

 

 

 

H

 

 

 

L

Write Bytes D, B (DQD, DQA, DQPD, DQPA)

 

H

 

 

 

 

L

 

 

 

 

L

 

 

H

 

 

 

L

 

 

 

H

Write Bytes D, B, A (DQD, DQB, DQA, DQPD,

 

H

 

 

 

 

L

 

 

 

 

L

 

 

H

 

 

 

L

 

 

 

L

DQPB, DQPA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Write Bytes D, B (DQD, DQB, DQPD, DQPB)

 

H

 

 

 

 

L

 

 

 

 

L

 

 

L

 

 

 

H

 

 

 

H

Write Bytes D, B, A (DQD, DQC, DQA, DQPD,

 

H

 

 

 

 

L

 

 

 

 

L

 

 

L

 

 

 

H

 

 

 

L

DQPC, DQPA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Truth Table for Read/Write [4, 9]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Function (CY7C1383D/CY7C1383F)

 

 

GW

 

 

 

 

BWE

 

 

 

 

 

BW

B

 

BW

A

Write Bytes D, C, A (DQD, DQB, DQA, DQPD,

 

 

H

 

 

 

 

L

 

 

 

L

 

 

 

L

DQPB, DQPA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Write All Bytes

 

 

H

 

 

 

 

L

 

 

 

L

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Write All Bytes

 

 

 

L

 

 

 

 

X

 

 

 

X

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read

 

 

H

 

 

 

 

H

 

 

 

X

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read

 

 

H

 

 

 

 

L

 

 

 

H

 

 

 

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Write Byte A – (DQA and DQPA)

 

 

H

 

 

 

 

L

 

 

 

H

 

 

 

L

Write Byte B – (DQB and DQPB)

 

 

H

 

 

 

 

L

 

 

 

L

 

 

 

H

Write All Bytes

 

 

H

 

 

 

 

L

 

 

 

L

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Write All Bytes

 

 

 

L

 

 

 

 

X

 

 

 

X

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

9. Table only lists a partial listing of the byte write combinations. Any combination of BWX is valid. Appropriate write will be done based on which byte write is active.

Document #: 38-05544 Rev. *F

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Cypress CY7C1383F, CY7C1383D manual Truth Table for Read/Write 4, Function CY7C1381D/CY7C1381F, DQPB, Dqpa, DQPC, Dqpa

CY7C1381D, CY7C1381F, CY7C1383D, CY7C1383F specifications

The Cypress CY7C1383F, CY7C1383D, CY7C1381F, and CY7C1381D are high-performance static random-access memory (SRAM) devices designed for a variety of applications requiring fast data storage and retrieval. These memory chips are part of the Cypress SRAM family, known for their low power consumption, high speed, and data integrity, making them suitable for use in telecommunications, networking, and industrial applications.

One of the standout features of the CY7C1383F and CY7C1383D models is their high density, offering 256K bits of memory. This provides ample space for storing critical data while maintaining excellent performance. The CY7C1381F and CY7C1381D variants, having a smaller capacity of 128K bits, are ideal for applications where space and power savings are paramount. All four devices are organized as 32K x 8 bits, promoting ease of integration into various designs.

These SRAM devices utilize advanced CMOS technology, which not only enhances their speed but also reduces power consumption. The fast access times, reaching as low as 10 nanoseconds for the CY7C1383F and CY7C1381F, enable high-speed data processing, making these memories suitable for cache applications and high-speed buffering. Overall, their performance characteristics ensure data can be accessed quickly and efficiently.

The CY7C1383F and CY7C1383D models come with an extended temperature range, ensuring consistent performance even in harsh environments. This reliability is critical for industrial applications where fluctuating temperatures can affect device functionality. Moreover, the CY7C1381F and CY7C1381D share this advantage, making all four components suitable for different operating conditions.

Built-in features such as byte-wide write enable and chip enable signals significantly ease the control of data access and manipulation. Additionally, the asynchronous nature of these SRAM devices allows for simple interfacing with various microcontrollers and processors, facilitating integration into existing systems with minimal design modifications.

In summary, the Cypress CY7C1383F, CY7C1383D, CY7C1381F, and CY7C1381D SRAM devices deliver high-performance data storage solutions, characterized by low power consumption, fast access times, and reliability in diverse operating conditions. Their versatility makes them an excellent choice for engineers seeking robust memory solutions in their designs.